Staking & Yield

Staking mechanisms, liquid staking, yield strategies, and reward distribution.

Overview

Staking secures networks and earns rewards.

Staking Types

Staking Contract

contract Staking {
    mapping(address => uint256) public staked;
    mapping(address => uint256) public rewards;
    uint256 public rewardRate;
    
    event Staked(address user, uint256 amount);
    event Withdrawn(address user, uint256 amount);
    event RewardsClaimed(address user, uint256 amount);
    
    function stake() public payable {
        require(msg.value > 0);
        staked[msg.sender] += msg.value;
        emit Staked(msg.sender, msg.value);
    }
    
    function withdraw(uint256 amount) public {
        require(staked[msg.sender] >= amount);
        staked[msg.sender] -= amount;
        payable(msg.sender).transfer(amount);
        emit Withdrawn(msg.sender, amount);
    }
    
    function claimRewards() public {
        uint256 reward = calculateReward(msg.sender);
        rewards[msg.sender] = 0;
        payable(msg.sender).transfer(reward);
        emit RewardsClaimed(msg.sender, reward);
    }
    
    function calculateReward(address user) public view returns (uint256) {
        return staked[user] * rewardRate / 100;
    }
}

Liquid Staking

class LiquidStaking:
    def __init__(self, total_staked):
        self.total_staked = total_staked
        self.shares = total_staked
        self.reward_pool = 0
    
    def deposit(self, amount):
        shares = amount * self.shares / self.total_staked
        self.total_staked += amount
        self.shares += shares
        return shares
    
    def withdraw(self, shares):
        amount = shares * self.total_staked / self.shares
        self.total_staked -= amount
        self.shares -= shares
        return amount
    
    def get_exchange_rate(self):
        return self.total_staked / self.shares

Yield Strategies

Best Practices

1. Diversify — Multiple protocols
2. Impermanent loss — Monitor LP positions
3. Smart contract risk — Audit verification
4. Gas optimization — Batch operations

Practice

Build a liquid staking protocol.